Archaeozoic

[ ahr-kee-uh-zoh-ik ]
/ ˌɑr ki əˈzoʊ ɪk /

adjective, noun Geology.

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Definition for archaeozoic (2 of 2)

Archeozoic

or Ar·chae·o·zo·ic

[ ahr-kee-uh-zoh-ik ]
/ ˌɑr ki əˈzoʊ ɪk /
Geology

adjective

noting or pertaining to the earlier half of the Precambrian Era, from about 5 billion to 2.5 billion years ago, during which the earliest datable rocks were formed and from which the oldest known fossil forms, blue-green algae and bacteria, have been recovered.

noun

the Archeozoic division of geologic time or the rock systems formed then.

Origin of Archeozoic

1870–75; archeo- + Greek zō(ḗ) life + -ic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for archaeozoic

British Dictionary definitions for archaeozoic (1 of 2)

Archaeozoic

esp US Archeozoic

/ (ˌɑːkɪəˈzəʊɪk) /

adjective

a former word for Archaean

British Dictionary definitions for archaeozoic (2 of 2)

Archeozoic
/ (ˌɑːkɪəˈzəʊɪk) /

adjective

a variant spelling (esp US) of Archaeozoic
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for archaeozoic (1 of 2)

Archaeozoic
[ är′kē-ə-zōĭk ]

Another spelling of Archeozoic.

Scientific definitions for archaeozoic (2 of 2)

Archeozoic

See Archean.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.